CZ 455 all the way . Can have multiple caliber rimfires with the quick change barrel design . Trigger can be worked down to high oz's , and zero creep with a 16.00 kit . Just picked up a Lilja in 22lr for mine , going after consistant .2s and MOA at 100 in 22lr , and am going to pick up another Lilja in 17hmr in a few months . The Savage 93 I own is going to go up on the chopping block after owning the CZ .